The driver of a passenger car will wear a high-visibility reflective vest when they exit the vehicle and occupy...

A)The carriageway of interurban roads, but not when occupying the hard shoulder.
B)The carriageway or hard shoulder of all types of roads, both urban and interurban.
C)The carriageway or hard shoulder of interurban roads.Correct
# Explanation
The high-visibility reflective vest is mandatory when the driver exits the vehicle and is situated on the carriageway or hard shoulder, but **only on interurban roads**. On urban roads its use is not mandatory. This safety measure is essential so that other drivers can identify the driver from a distance, especially in low-visibility conditions.